<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Reduction of hull structural weight is the most important aim in the design of many ship types. But the ability of designers to produce optimal designs of ship structures is severely limited by the calculation techniques available for this task. Complete definition of the optimal structural design requires formulation of size-topology-shape-material optimization task unifying optimization problems from four areas and effective solution of the problem. So far a significant progress towards solution of this problem has not been achieved. In other hand in recent years attempts have been made to apply genetic algorithm (GA) optimization techniques to design of ship structures. An objective of the paper was to create a computer code and investigate a possibility of simultaneous optimization of both topology and scantlings of structural elements of large spacial sections of ships using GA. In the paper GA is applied to solve the problem of structural weight minimisation of a high speed vehicle-passenger catamaran with several design variables as dimensions of the plate thickness, longitudinal stiffeners and transverse frames and spacing between longitudinals and transversal members. Results of numerical experiments obtained using the code are presented. They shows that GA can be an efficient optimization tool for simultaneous design of topology and sizing high speed craft structures.</p></abstract>

Reduction of hull structural weight is the most important aim in the design of many ship types. But the ability of designers to produce optimal designs of ship structures is severely limited by the calculation techniques available for this task. Complete definition of the optimal structural design requires formulation of size-topology-shape-material optimization task unifying optimization problems from four areas and effective solution of the problem. So far a significant progress towards solution of this problem has not been achieved. In other hand in recent years attempts have been made to apply genetic algorithm (GA) optimization techniques to design of ship structures. An objective of the paper was to create a computer code and investigate a possibility of simultaneous optimization of both topology and scantlings of structural elements of large spacial sections of ships using GA. In the paper GA is applied to solve the problem of structural weight minimisation of a high speed vehicle-passenger catamaran with several design variables as dimensions of the plate thickness, longitudinal stiffeners and transverse frames and spacing between longitudinals and transversal members. Results of numerical experiments obtained using the code are presented. They shows that GA can be an efficient optimization tool for simultaneous design of topology and sizing high speed craft structures.

Structural weight minimization of high speed vehicle-passenger catamaran by genetic algorithm

West Pomeranian University of Technology, Szczecin

Polish Maritime Research

Reduction of hull structural weight is the most important aim in the design of many ship types. But the ability of designers to produce optimal designs of ship...

Structural weight minimization of high speed vehicle-passenger catamaran by genetic algorithm

Publié en ligne: 30 juil. 2009

Pages: 11 - 23

DOI: https://doi.org/10.2478/v10012-008-0017-5

Mots clés
ship structure, optimization, topology optimization, sizing optimization, genetic algorithm

This content is open access.

Structural weight minimization of high speed vehicle-passenger catamaran by genetic algorithm

Publié en ligne: 30 juil. 2009

Pages: 11 - 23

DOI: https://doi.org/10.2478/v10012-008-0017-5

Mots clésship structure, optimization, topology optimization, sizing optimization, genetic algorithm

This content is open access.

Mots clés
ship structure, optimization, topology optimization, sizing optimization, genetic algorithm